Cueva El Abra
Basic information
Sample name: Cueva El Abra
Reference: C. A. Quintana. 2016. Microvertebrados del sitio arqueológico Cueva El Abra, Tandilia oriental: tafonomÃa y paleoambiente. Comechingonia 20(1):203-229 [ER 3723]
Geography
Country: Argentina
State: Buenos Aires
Coordinate: 37° 54' S, 58° 6' W
Coordinate basis: based on nearby landmark
Time interval: Holocene
Ma: 0.000958
Age basis: radiocarbon (uncalibrated)
Geography comments: "en la sierra La Vigilancia... un reparo rocoso de 25 m2 con un ârea excavada de 8 m2"
coordinate is based on Sierra La Vigilancia
units 1 and 2 are latest Holocene, with an uncalibrated radiocarbon date of 958 +/- 32 BP on "carbón vegetal"
coordinate is based on Sierra La Vigilancia
units 1 and 2 are latest Holocene, with an uncalibrated radiocarbon date of 958 +/- 32 BP on "carbón vegetal"
Environment
Lithology: not described
Taphonomic context: cave
Archaeology: metal tools,stone tools
Habitat comments: "metal, cuero, gres y restos óseos de Equus caballus" indicate post-conquest human activity
Methods
Life forms: rodents,other small mammals,birds,snakes,fishes
Sampling methods: quarry
Sample size: 557 specimens
Sampling comments: counts are only given for microvertebrates, i.e., taxa under 1 kg: macrovertebrates include "Lama guanicoe, Ozotoceros bezoarticus, Lagostomus maximus, Myocastor coypus, Canis sp., Leopardus colocolo, Puma concolor, Chaetophractus villosus, Dasypus hybridus, Tupinambis merianae, Rhea americana y otras aves no identificadas" plus the plants "Celtis sp., Baccharis sp. y Colletia sp."
Metadata
Sample number: 3956
Contributor: John Alroy
Enterer: John Alroy
Created: 2022-07-29 16:42:20
Modified: 2022-07-29 06:42:20
Abundance distribution
17 species
5 singletons
total count 557
geometric series index: 26.6
Fisher's α: 3.314
geometric series k: 0.7126
Hurlbert's PIE: 0.7340
Shannon's H: 1.7241
Good's u: 0.9910
Each square represents a species. Square sizes are proportional to counts.
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Register
| Monodelphis dimidiata | 1 | |
| Thylamys sp. | 3 | |
| also one indeterminate didelphid | ||
| Akodon azarae | 14 | 24.4 g |
| Necromys sp. | 9 | |
| Oxymycterus rufus | 1 | 45.0 g |
| Holochilus brasiliensis | 7 | 157 g |
| Reithrodon auritus | 25 | 81.3 g |
| Bibimys torresi | 1 | |
| Pseudoryzomys simplex | 1 | |
| Calomys sp. | 1 | |
| Ctenomys talarum | 7 | |
| Cavia aperea | 163 | 530 g |
| Galea tixiensis | 226 | |
| plus 116 indeterminate Caviinae | ||
| Aves indet. | 20 | |
| Bothrops cf. alternatus | 55 | |
| Colubroidea indet. | 16 | |
| Rhamdia quelen | 7 | |
| also 7 indeterminate fish vertebrae | ||